Tapered Shaft Collars | McMaster-Carr

Filter by

Shaft Diameter

Shaft Type

Construction

Material

Shaft Coupling Connection

End Type

Width

Overall Length

Keyway Width

Clamping Screw Material

Shaft Keyway Width

Length

Number of Clamping Screws Included

Shaft Length

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Thread Size

Export Control Classification Number (ECCN)

EAR99

RoHS

Compliant

REACH

Compliant

DFARS Specialty Metals

Bore Depth

Keyway Depth

For Rotary Motion

Performance

Bore Keyway Width

135 Products

Finish-Your-Own-Bore Two-Piece Shaft Collars

Machine the bore on these two-piece collars to the exact size you need. They fit snugly on shafts that are worn thin, oversized from coatings, or uncommonly sized. Attach them anywhere along the shaft when other components are already installed or you can't access the ends. The collars clamp evenly without marring the shaft, so you can reposition or remove them later.

Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.

Carbon Steel—Strong and easy to machine. Use in dry environments, since moisture will cause steel to rust.

303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These are easier to machine than other stainless steel collars.

Aluminum—One-third the weight of steel and corrosion resistant.

				Clamping Screw
	For Shaft Dia.	OD	Wd.	Type	No. Included		Each
Black-Oxide Carbon Steel



		1/8" to 3/4"	1 3/4"	1/2"	Socket Head	2	3374K11	000000


		1/2" to 1"	2 1/4"	1/2"	Socket Head	2	3374K12	00000
		5/8" to 1 9/16"	2 1/2"	1/2"	Socket Head	2	3374K13	00000
		3/4" to 2"	3 1/4"	5/8"	Socket Head	2	3374K14	00000
		1" to 2 5/8"	4 1/4"	3/4"	Socket Head	2	3374K15	000000
		1 1/4" to 3"	4 1/2"	3/4"	Socket Head	2	3374K16	000000


		Carbon Steel



				1/8" to 3/4"	1 3/4"	1/2"	Socket Head	2	3374K21	00000


				1/2" to 1"	2 1/4"	1/2"	Socket Head	2	3374K22	00000
				5/8" to 1 9/16"	2 1/2"	1/2"	Socket Head	2	3374K23	00000
				3/4" to 2"	3 1/4"	5/8"	Socket Head	2	3374K24	00000


				303 Stainless Steel



						1/8" to 3/4"	1 3/4"	1/2"	Socket Head	2	3374K31	000000


						5/8" to 1 9/16"	2 1/2"	1/2"	Socket Head	2	3374K33	000000
						3/4" to 2"	3 1/4"	5/8"	Socket Head	2	3374K34	000000
						2" to 4 1/4"	5 1/2"	7/8"	Socket Head	2	3374K37	000000
						2 1/2" to 5"	6 1/4"	7/8"	Socket Head	2	3374K38	000000


						Aluminum



								1/8" to 3/4"	1 3/4"	1/2"	Socket Head	2	3374K51	000000


								1/2" to 1"	2 1/4"	1/2"	Socket Head	2	3374K52	000000
								3/4" to 2"	3 1/4"	5/8"	Socket Head	2	3374K54	000000
								2" to 4 1/4"	5 1/2"	7/8"	Socket Head	2	3374K57	000000

Machinable Shaft Ends

One side is unfinished for milling custom pulleys, threaded hubs, sprockets, collars, knobs, sensor targets, or just about anything imaginable; the other side is a one-piece clamping coupling for mounting whatever you’ve created to your shaft. Slide these ends onto your shaft and tighten the clamping screws for a secure hold that won’t damage your shaft.

Straight End


For Keyed Shafts	For Round Shafts

1215 Carbon Steel—Carbon steel ends are easier to machine than stainless steel. They have a black-oxide finish that adds a layer of rust resistance but should be used in primarily dry environments.

303 Stainless Steel—Stainless steel ends provide the most corrosion resistance but are more difficult to machine than steel.

For Keyed Shafts—Ends for keyed shafts have keyways that firmly grip the shaft’s key to eliminate slipping. They handle higher torque than ends for round shafts.

	For Shaft Dia.	Overall Lg.	OD	For Rotary Motion		Each
Black-Oxide 1215 Carbon Steel







				For Keyed Shafts

				1/2"	2 3/4"	1 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N75	000000


				5/8"	3 1/4"	1 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N76	00000
				3/4"	4 1/4"	1 3/4"	Continuous, Forward/Reverse, Start/Stop	3463N77	00000
				7/8"	4 3/8"	1 7/8"	Continuous, Forward/Reverse, Start/Stop	3463N78	00000
				1"	4 3/4"	2"	Continuous, Forward/Reverse, Start/Stop	3463N79	00000
				1 1/8"	4 3/4"	2 1/8"	Continuous, Forward/Reverse, Start/Stop	3463N81	00000
				1 1/4"	5"	2 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N82	000000
				1 3/8"	5"	2 3/8"	Continuous, Forward/Reverse, Start/Stop	3463N83	000000
				1 1/2"	5 3/8"	2 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N84	000000
				1 3/4"	6"	3"	Continuous, Forward/Reverse, Start/Stop	3463N85	000000
				2"	6 3/4"	3 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N86	000000




						For Round Shafts

						1/2"	2 3/4"	1 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N51	00000


						5/8"	3 1/4"	1 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N52	00000
						3/4"	4 1/4"	1 3/4"	Continuous, Forward/Reverse, Start/Stop	3463N53	00000
						7/8"	4 3/8"	1 7/8"	Continuous, Forward/Reverse, Start/Stop	3463N54	00000
						1"	4 3/4"	2"	Continuous, Forward/Reverse, Start/Stop	3463N55	00000
						1 1/8"	4 3/4"	2 1/8"	Continuous, Forward/Reverse, Start/Stop	3463N56	00000
						1 1/4"	5"	2 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N57	00000
						1 3/8"	5"	2 3/8"	Continuous, Forward/Reverse, Start/Stop	3463N58	00000
						1 1/2"	5 3/8"	2 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N59	00000
						1 3/4"	6"	3"	Continuous, Forward/Reverse, Start/Stop	3463N61	000000
						2"	6 3/4"	3 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N62	000000


						303 Stainless Steel







										For Keyed Shafts

										1/2"	2 3/4"	1 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N87	00000


										5/8"	3 1/4"	1 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N88	00000
										3/4"	4 1/4"	1 3/4"	Continuous, Forward/Reverse, Start/Stop	3463N89	000000
										7/8"	4 3/8"	1 7/8"	Continuous, Forward/Reverse, Start/Stop	3463N91	000000
										1"	4 3/4"	2"	Continuous, Forward/Reverse, Start/Stop	3463N92	000000
										1 1/8"	4 3/4"	2 1/8"	Continuous, Forward/Reverse, Start/Stop	3463N93	000000
										1 1/4"	5"	2 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N94	000000
										1 3/8"	5"	2 3/8"	Continuous, Forward/Reverse, Start/Stop	3463N95	000000
										1 1/2"	5 3/8"	2 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N96	000000
1 3/4"										6"	3"	Continuous, Forward/Reverse, Start/Stop	3463N97	000000
2"	6 3/4"									3 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N98	000000




		For Round Shafts

		1/2"	2 3/4"							1 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N63	00000


		5/8"	3 1/4"							1 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N64	00000
		3/4"	4 1/4"							1 3/4"	Continuous, Forward/Reverse, Start/Stop	3463N65	00000
		7/8"	4 3/8"							1 7/8"	Continuous, Forward/Reverse, Start/Stop	3463N66	00000
		1"	4 3/4"							2"	Continuous, Forward/Reverse, Start/Stop	3463N67	000000
		1 1/8"	4 3/4"							2 1/8"	Continuous, Forward/Reverse, Start/Stop	3463N68	00000
		1 1/4"	5"							2 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N69	000000
		1 3/8"	5"							2 3/8"	Continuous, Forward/Reverse, Start/Stop	3463N71	000000
		1 1/2"	5 3/8"							2 1/2"	Continuous, Forward/Reverse, Start/Stop	3463N72	000000
		1 3/4"	6"							3"	Continuous, Forward/Reverse, Start/Stop	3463N73	000000
		2"	6 3/4"							3 1/4"	Continuous, Forward/Reverse, Start/Stop	3463N74	000000

Flanged End


For Keyed Shafts	For Round Shafts

Use flanged ends to make objects with larger ODs than straight ends, or add mounting holes to create a custom mounting flange for connecting components.

1117 Carbon Steel—Carbon steel ends are easier to machine than stainless steel. They have a black-oxide finish that adds a layer of rust resistance but should be used in primarily dry environments.

303 Stainless Steel—Stainless steel ends provide the most corrosion resistance but are more difficult to machine than steel.

For Keyed Shafts—Ends for keyed shafts have keyways that firmly grip the shaft’s key to eliminate slipping. They handle higher torque than ends for round shafts.

	Flange OD	For Rotary Motion		Each
Black-Oxide 1117 Carbon Steel







	For Keyed Shafts

	1/2"	1 11/16"	1 1/4"	2 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N31	000000


	3/4"	2 1/16"	1 3/4"	2 63/64"	Continuous, Forward/Reverse, Start/Stop	3463N32	000000
	1"	2 1/4"	2"	3 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N33	000000




			For Round Shafts

			1/2"	1 11/16"	1 1/4"	2 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N11	00000


			3/4"	2 1/16"	1 3/4"	2 63/64"	Continuous, Forward/Reverse, Start/Stop	3463N12	00000
			1"	2 1/4"	2"	3 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N13	00000


			303 Stainless Steel







							For Keyed Shafts

							1/2"	1 11/16"	1 1/4"	2 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N41	000000


							3/4"	2 1/16"	1 3/4"	2 63/64"	Continuous, Forward/Reverse, Start/Stop	3463N42	000000
							1"	2 1/4"	2"	3 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N43	000000




									For Round Shafts

									1/2"	1 11/16"	1 1/4"	2 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N21	00000


									3/4"	2 1/16"	1 3/4"	2 63/64"	Continuous, Forward/Reverse, Start/Stop	3463N22	000000
									1"	2 1/4"	2"	3 15/64"	Continuous, Forward/Reverse, Start/Stop	3463N23	000000

Finish-Your-Own-Bore Shaft Collars

Machine the bore on these collars to the exact size you need. They'll fit shafts that are worn thin, oversized from coatings, or uncommonly sized. Slide them over the end of your shaft and tighten the clamping screw. They grip firmly and evenly without marring the shaft, so you can reposition or remove them later.

Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.

				Clamping Screw
	For Shaft Dia.	OD	Wd.	Type	No. Included		Each
Black-Oxide Carbon Steel



		1/8" to 3/4"	1 3/4"	1/2"	Socket Head	1	9964K11	000000


		1/2" to 1"	2 1/4"	1/2"	Socket Head	1	9964K12	00000
		5/8" to 1 9/16"	2 1/2"	1/2"	Socket Head	1	9964K13	00000
		3/4" to 2"	3 1/4"	5/8"	Socket Head	1	9964K14	00000
		1" to 2 5/8"	4 1/4"	3/4"	Socket Head	1	9964K15	000000
		1 1/4" to 3"	4 1/2"	3/4"	Socket Head	1	9964K16	000000

Step-Down Shaft Adapters


For Keyed Shafts	For Round Shafts

Reduce the diameter of your shaft while adding length. One side of the adapter is a two-piece coupling that clamps onto your existing shaft; a smaller shaft extends from the other side. Tighten the clamping screws for a firm, even grip that won’t damage shafts.

Black-Oxide Steel—Black-oxide steel adapters have a finish that adds a layer of rust resistance but should be used in primarily dry environments. Because they’re steel, they balance high strength and good machinability, making them ideal for general purpose use.

303 Stainless Steel—303 stainless steel adapters resist corrosion in damp environments. They are easier to machine than other types of stainless steel but more difficult to machine than steel.

	Shaft Lg.	Bore Dp.	OD	Max. Rotation Speed	Max. Torque		Each
Black-Oxide Steel







	For Keyed Shafts

	3/4"	1/2"	3 1/2"	1 1/4"	1 5/8"	1 3/4"	Not Rated	Not Rated	9783T11	000000


	7/8"	5/8"	3 5/8"	1 1/4"	1 7/8"	1 7/8"	Not Rated	Not Rated	9783T12	00000
	1"	3/4"	3 5/8"	1 1/4"	2"	2"	Not Rated	Not Rated	9783T13	00000
	1 1/8"	7/8"	3 7/8"	1 1/2"	2"	2 1/8"	Not Rated	Not Rated	9783T14	00000
	1 1/4"	1"	4 1/2"	2"	2"	2 1/4"	Not Rated	Not Rated	9783T15	00000
	1 3/8"	1 1/8"	5"	2"	2 1/4"	2 3/8"	Not Rated	Not Rated	9783T16	00000
	1 1/2"	1 1/4"	5 3/8"	2 3/8"	2 1/4"	2 1/2"	Not Rated	Not Rated	9783T17	00000




			For Round Shafts

			3/8"	1/4"	2 1/8"	13/16"	1 1/8"	1 1/16"	Not Rated	Not Rated	9783T19	00000


			1/2"	3/8"	2 5/8"	1 1/8"	1 1/4"	1 1/4"	Not Rated	Not Rated	9783T18	00000
			3/4"	1/2"	3 1/2"	1 1/4"	1 5/8"	1 3/4"	Not Rated	Not Rated	9783T1	00000
			7/8"	5/8"	3 5/8"	1 1/4"	1 7/8"	1 7/8"	Not Rated	Not Rated	9783T2	00000
			1"	3/4"	3 5/8"	1 1/4"	2"	2"	Not Rated	Not Rated	9783T3	00000
			1 1/8"	7/8"	3 7/8"	1 1/2"	2"	2 1/8"	Not Rated	Not Rated	9783T4	00000
			1 1/4"	1"	4 1/2"	2"	2"	2 1/4"	Not Rated	Not Rated	9783T5	00000
			1 3/8"	1 1/8"	5"	2"	2 1/4"	2 3/8"	Not Rated	Not Rated	9783T6	00000
			1 1/2"	1 1/4"	5 3/8"	2 3/8"	2 1/4"	2 1/2"	Not Rated	Not Rated	9783T7	00000


			303 Stainless Steel







							For Keyed Shafts

							3/4"	1/2"	3 1/2"	1 1/4"	1 5/8"	1 3/4"	Not Rated	Not Rated	9783T34	000000


							7/8"	5/8"	3 5/8"	1 1/4"	1 7/8"	1 7/8"	Not Rated	Not Rated	9783T35	000000
							1"	3/4"	3 5/8"	1 1/4"	2"	2"	Not Rated	Not Rated	9783T36	000000
							1 1/4"	1"	4 1/2"	2"	2"	2 1/4"	Not Rated	Not Rated	9783T37	000000




									For Round Shafts

									3/4"	1/2"	3 1/2"	1 1/4"	1 5/8"	1 3/4"	Not Rated	Not Rated	9783T31	00000


									7/8"	5/8"	3 5/8"	1 1/4"	1 7/8"	1 7/8"	Not Rated	Not Rated	9783T32	00000
									1"	3/4"	3 5/8"	1 1/4"	2"	2"	Not Rated	Not Rated	9783T33	000000

Step-Up Shaft Adapters


For Keyed Shafts	For Round Shafts

Increase the diameter of your shaft while also making it longer. One side of these adapters clamp onto your shaft; the other side becomes your new larger end so you don’t have to replace the entire shaft. Tighten the clamping screws for a firm, even grip that won’t damage shafts.

303 Stainless Steel—303 stainless steel adapters resist corrosion in damp environments. They are easier to machine than other types of stainless steel but more difficult to machine than steel.

	Shaft Lg.	Bore Dp.	OD	Max. Rotation Speed	Max. Torque		Each
Black-Oxide Steel







	For Keyed Shafts

	1/2"	3/4"	2 3/4"	1 1/4"	1 1/4"	1 1/4"	Not Rated	Not Rated	3256K21	0000000


	5/8"	7/8"	3 1/4"	1 1/2"	1 3/8"	1 1/2"	Not Rated	Not Rated	3256K22	000000
	3/4"	1"	4 1/4"	2 3/8"	1 5/8"	1 3/4"	Not Rated	Not Rated	3256K23	000000
	7/8"	1 1/8"	4 3/8"	2"	1 7/8"	1 7/8"	Not Rated	Not Rated	3256K24	000000
	1"	1 1/4"	4 3/4"	2 3/8"	2"	2"	Not Rated	Not Rated	3256K25	000000
	1 1/8"	1 3/8"	4 3/4"	2 3/8"	2"	2 1/8"	Not Rated	Not Rated	3256K26	000000
	1 1/4"	1 1/2"	5"	2 1/2"	2"	2 1/4"	Not Rated	Not Rated	3256K27	000000




			For Round Shafts

			1/4"	3/8"	1 7/8"	7/8"	13/16"	13/16"	Not Rated	Not Rated	3256K19	00000


			3/8"	1/2"	2 1/2"	1 1/8"	1 1/8"	1 1/16"	Not Rated	Not Rated	3256K18	00000
			1/2"	3/4"	2 3/4"	1 1/4"	1 1/4"	1 1/4"	Not Rated	Not Rated	3256K11	00000
			5/8"	7/8"	3 1/4"	1 1/2"	1 3/8"	1 1/2"	Not Rated	Not Rated	3256K12	00000
			3/4"	1"	4 1/4"	2"	1 5/8"	1 3/4"	Not Rated	Not Rated	3256K13	00000
			7/8"	1 1/8"	4 3/8"	2"	1 7/8"	1 7/8"	Not Rated	Not Rated	3256K14	00000
			1"	1 1/4"	4 3/4"	2 3/8"	2"	2"	Not Rated	Not Rated	3256K15	00000
			1 1/8"	1 3/8"	4 3/4"	2 3/8"	2"	2 1/8"	Not Rated	Not Rated	3256K16	00000
			1 1/4"	1 1/2"	5"	2 1/2"	2"	2 1/4"	Not Rated	Not Rated	3256K17	00000


			303 Stainless Steel







							For Keyed Shafts

							1/2"	3/4"	2 3/4"	1 1/4"	1 1/4"	1 1/4"	Not Rated	Not Rated	3256K44	000000


							5/8"	7/8"	3 1/4"	1 1/2"	1 3/8"	1 1/2"	Not Rated	Not Rated	3256K45	000000
							3/4"	1"	4 1/4"	2"	1 5/8"	1 3/4"	Not Rated	Not Rated	3256K46	000000
							1"	1 1/4"	4 3/4"	2 3/8"	2"	2"	Not Rated	Not Rated	3256K47	000000




									For Round Shafts

									1/2"	3/4"	2 3/4"	1 1/4"	1 1/4"	1 1/4"	Not Rated	Not Rated	3256K41	00000


									5/8"	7/8"	3 1/4"	1 1/2"	1 3/8"	1 1/2"	Not Rated	Not Rated	3256K42	00000
									3/4"	1"	4 1/4"	2"	1 5/8"	1 3/4"	Not Rated	Not Rated	3256K43	000000

Threaded Shaft Adapters


For Keyed Shafts	For Round Shafts

Adapt your shaft to a threaded end without having to machine threads onto your shaft. These adapters have a threaded end that mounts into tapped holes or can be used for threaded accessories, such as mixer propellers or fan blades. To attach these adapters to your existing shaft, tighten the clamping screws for a firm, even grip that won’t damage shafts. Made of steel, these adapters balance high strength and good machinability, making them ideal for general purpose use. They have a black-oxide finish that resists rust but should be used in primarily dry environments.

		Thread
	For Shaft Dia.	Size	Lg.	Overall Lg.	Bore Dp.	OD	Max. Rotation Speed	Max. Torque		Each
Black-Oxide Steel







				For Keyed Shafts

				1/2"	1/2"-13	1"	2 3/4"	1 1/4"	1 1/4"	Not Rated	Not Rated	4244N11	0000000


				5/8"	5/8"-11	1 1/4"	3 1/4"	1 1/2"	1 1/2"	Not Rated	Not Rated	4244N12	000000
				3/4"	3/4"-10	1 1/2"	4 1/4"	1 5/8"	1 3/4"	Not Rated	Not Rated	4244N13	000000
				1"	1"-8	2"	4 3/4"	2"	2"	Not Rated	Not Rated	4244N14	000000




						For Round Shafts

						1/2"	1/2"-13	1"	2 3/4"	1 1/4"	1 1/4"	Not Rated	Not Rated	4244N15	000000


						5/8"	5/8"-11	1 1/4"	3 1/4"	1 1/2"	1 1/2"	Not Rated	Not Rated	4244N16	000000
						3/4"	3/4"-10	1 1/2"	4 1/4"	1 5/8"	1 3/4"	Not Rated	Not Rated	4244N17	000000
						1"	1"-8	2"	4 3/4"	2"	2"	Not Rated	Not Rated	4244N18	000000